The Periodic Table
Who is the father of the Periodic Table?
Dmitri Mendeleev
What is the 1st group on the periodic table (not including hydrogen) called?
Alkali Metals
How many valence electrons do they have?
What group number is the oxygen family?
Group 16 or 6A
Why did Mendeleev develop the periodic table?
To group elements in terms of chemical properties
How does the size of an atom change as you move left to right across the periodic table?
How does size change when you move up and down on the periodic table?
Atomic number increases, the size of the atom increases because they have more protons and neutrons.
Most elements in the periodic table are classified as this
metals
The right side of the periodic table in group 17
As you move down a group of the periodic table elements have more __________.
protons
If an atom gains an electron what type of charge will it have?
-1 becomes negatively charged.
What happens if you lose electrons?
How does ionization energy change down a group and across a period?
decreases as you move down a group
increases as you move from left to right across a period
What are the horizontal rows called?
Periods
List two characteristics of metals
conductive of heat & electricity, ductile, malleable, high luster
What is group 18 or 8A called?
Noble gases
What is periodic law?
elements arranged by atomic number gives physical and chemical properties varying periodically
Why did Mendeleev leave "gaps" in his periodic table of elements
There were some elements that hadn't been discovered yet.
However, he was able to predict the properties these elements should have.
What are the vertical columns called?
Groups, Families
What group is the Boron family? What group number (#) is Boron in?
Group 13 or 3A
Bonus: draw an atomic model of Boron including the number of protons and electrons
Each element in a family or group have the same number of what?
Valence electrons
What is an ion?
a negatively or positively charged atom created by an atom losing or gaining an electron.
What element is located in period 5 group 18
Xe, Xenon
Elements are put into rows by increasing _____
Atomic Number
What is group 17 or 7A called?
Halogens
Bonuses:
1. How many valence electrons do they have?
2. Will they form positive or negatively charged ions?
Draw a Sodium (Na) and Chlorine (Cl) atom.
Now draw them as ions.
Which one is gaining and which one is losing electrons?
What is the charge on each ion?
Any of the noble gases
I am an element that has similar properties to Potassium (K) but am in the same period as Barium (Ba)
Cesium (Cs)
How are certain elements in a group similar in regards to physical and chemical properties?
They react with other elements in similar ways. They may share similar color, metallic character, etc.
What is group 2 called?
Alkaline earth metals
What type of ions would you expect these elements to form?
What are the 3 classification of elements?
metals, nonmetals, semiconductors (metalloids)
Which group or family of elements are the most reactive?
alkali metals
Final Jeopardy
There are five unknown elements represented by the letters V, W, X, Y, and Z. All five elements have the same number of valence electrons. Element Z is the lightest and the only non-metal of the bunch. Element V is the heaviest of the five and is a metal that can poison you (it was once used to make pipes). Element X is neither a metal nor a non-metal, but is an important element in the production of your smartphone/tablet. Also, Element Y is neither a metal nor a non-metal and has valence electrons in the 4th energy level. Element Y loves yodeling, driving BMWs, and an occasional bratwurst covered in sauerkraut. Lastly, element W is a metal used to make foil and a musical character that wants a heart.
Identify the group I am in and the elements for V, W, X, Y, and Z
Group 14 or what is Carbon Family